Check the Level Of Detail (LOD) either in the object settings or the MVO settings.
It depends on whether the window is using the object settings or the MVO settings as to which will have effect.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11